On Tue, Aug 8, 2017 at 2:25 PM, Alexander Korotkov <aekorot...@gmail.com> wrote: > > Do we already assume that default btree opclass for array element type > matches PK opclass when using @>> operator on UPDATE/DELETE of referenced > table? > I believe so, since it's a polymorphic function.
> If so, we don't introduce additional restriction here... > You mean to remove the wrapper query ? > GROUP BY would also use default btree/hash opclass for element type. It > doesn't differ from DISTINCT from that point. > Then there's no going around this limitation, Best Regard, Mark Rofail